.container {
  padding: 15px;
  line-height: 25px;
}

.round {
  display: block;
  position: fixed;
  right: 25px;
  width: 60px;
  height: 60px;
  border-radius: 50%;
  opacity: .6;
}

.s-top-btn {
  display: block;
  bottom: 100px;
  background: url("../img/top.png") no-repeat 0 0/100%;
}

.play-btn {
  bottom: 25px;
  background: url("../img/play.jpg") no-repeat 0 0/100%;
}

.round:hover {
  opacity: 1;
}
